Home / 25,271.55-37,859.94-21,138.12

Finding the Fourth Proportional to 25,271.55, 37,859.94 and 21,138.12

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Solution

The fourth proportional to 25,271.55, 37,859.94 and 21,138.12 is: 31,667.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,271.55 : 37,859.94 = 21,138.12 : x
  2. Step 2: Convert to fraction form
    25,271.55/37,859.94 = 21,138.12/x
  3. Step 3: Cross multiply
    25,271.55x = 37,859.94 × 21,138.12
  4. Step 4: Simplify right side
    25,271.55x = 800,287,954.91
  5. Step 5: Solve for x
    x = 800,287,954.91/25,271.55
  6. Step 6: Final answer
    x = 31,667.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.